package com.syj.core.interceptor;

import com.syj.core.variable.GlobalParameters;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * @author rankai
 *         createTime 2017-02-2017/2/8 13:42
 */
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession session = request.getSession();
        if (session != null) {
            Object attribute = session.getAttribute(GlobalParameters.USER_SESSION);
            if (attribute == null) {
                response.sendRedirect("/");
                return Boolean.FALSE;
            }
        }
        return Boolean.TRUE;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}
